Genome regulation by polycomb and trithorax proteins

Cell. 2007 Feb 23;128(4):735-45. doi: 10.1016/j.cell.2007.02.009.

Abstract

Polycomb group (PcG) and trithorax group (trxG) proteins are critical regulators of numerous developmental genes. To silence or activate gene expression, respectively, PcG and trxG proteins bind to specific regions of DNA and direct the posttranslational modification of histones. Recent work suggests that PcG proteins regulate the nuclear organization of their target genes and that PcG-mediated gene silencing involves noncoding RNAs and the RNAi machinery.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Animals
  • Chromosomal Proteins, Non-Histone / genetics*
  • Chromosomal Proteins, Non-Histone / metabolism
  • Drosophila Proteins / genetics*
  • Drosophila Proteins / metabolism
  • Epigenesis, Genetic / genetics*
  • Evolution, Molecular
  • Gene Expression Regulation, Developmental / genetics*
  • Histones / genetics
  • Histones / metabolism
  • Humans
  • Polycomb-Group Proteins
  • RNA Interference / physiology*
  • RNA, Untranslated / genetics
  • RNA, Untranslated / metabolism
  • Repressor Proteins / genetics*
  • Repressor Proteins / metabolism

Substances

  • Chromosomal Proteins, Non-Histone
  • Drosophila Proteins
  • Histones
  • Polycomb-Group Proteins
  • RNA, Untranslated
  • Repressor Proteins
  • trx protein, Drosophila